Some Kreis families may somehow be related to k'reish tribe in Sudan and through them also to Koreish in Arabia who initially might have too spoken the language used by kreish in Africa distantly related to tamil .
See Kulak,Kostbar,Neufeld,Luxemburg,Klaber,Kecskeméti,Magyar,Ashkenazi,Kabay,Dobó,Kun,Mang,Makedonski,Saxon !
Balázs Déri